| Titre : |
Sustainable alkyd-based coatings |
| Type de document : |
texte imprimé |
| Auteurs : |
Jo Grade, Auteur ; Marilyn van de Velde, Auteur |
| Année de publication : |
2014 |
| Article en page(s) : |
p. 36-38 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Charges (matériaux)
Formulation (Génie chimique)
Latex
Liants
Polyalkydes
Polymères en émulsion
Ressources renouvelables
Revêtement émail:Peinture-émail
Revêtements décoratifs:Peinture décorative
Revêtements en phase aqueuse:Peinture en phase aqueuse
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Developement green alkyd-based paints allowing VOC reduction in the paint using water as a liquid filler.
There is an increasing tendency in the market to reduce
or eliminate use of solvents in decorative coatings.
Waterborne latex paints, using raw materials from petrochemical resources, have largely replaced conventional solventborne alkyd resins in wall paints. For wood and metal protection however, alkyd resins remain the preferred binders, for their excellent protective properties and appearance.
Even today, almost half of the European resin production for surface coatings consists of alkyd resins, despite the pressure from more 'modem' binder technologies like waterborne acrylic latexes or polyurethane dispersions.
Strong arguments remain to predict a bright future for alkyd resins in surface coatings :
Performance. Alkyds combine cost effectiveness with unique formulation, application and dry film properties that cannot be achieved with other resin types. Moreover, alkyds offer good pigment wetting, good penetration in porous substrates and excellent chemical resistance. This technology is easy to apply and gives high gloss finishes.
Sustainability. A resin technology that is already using a large fraction from renewable, non-petrochemical raw materials. Alkyd resins can be formulated easily with up to 75% of raw materials coming from natural resources I.
Legislation. The Decorative Paints directive 2004/42/CE, limiting the use of volatile organic compounds (VOC) in decorative paints and automotive refinish paints sets the targets in Europe. The directive defines maximum levels of solvents with a boiling point <250°C for a variety of coating categories and differentiates between solventborne and waterbome formulations. It is an example for voluntary schemes and legislation being implemented or prepared all over the world. |
| Note de contenu : |
- STRATEGIES FOR VOC REDUCTION OR ELIMINATION : High solids alkyds - The water in oil approach - Water-reducible alkyds and urethane alkyds hybrids - Externally emulsified alkyd resins
- OIL IN WATER ALKYD EMULSIONS : Preparing alkyd emulsions - Experimental |
| En ligne : |
https://drive.google.com/file/d/1L2-bf2pFnOT9BwfrFJDw5iGjO3aS9XtV/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=20753 |
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 204, N° 4594 (03/2014) . - p. 36-38
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